_aColorSep[Index] = v;
  /* At last invalidate dialog client window */
  WM_InvalidateWindow(WM_GetClientWindow(hDlg));
}

/*********************************************************************
*
*       _cbBkWindow
*/
static void _cbBkWindow(WM_MESSAGE * pMsg) {
  int xPos, yPos;
  xPos = LCD_GetXSize() / 2 - bmSeggerLogoBlue.XSize/2;
  yPos = LCD_GetYSize() / 2 - bmSeggerLogoBlue.YSize/2 ;
  switch (pMsg->MsgId) {
  case WM_PAINT:
    GUI_SetBkColor(GUI_BLUE);
    GUI_Clear();
    GUI_SetColor(GUI_WHITE);
    GUI_SetFont(&GUI_Font24_ASCII);
    GUI_DispStringHCenterAt("DIALOG_SliderColor - Sample", 160, 5);
    GUI_DrawBitmap(&bmSeggerLogoBlue, xPos, yPos );
  default:
    WM_DefaultProc(pMsg);
  }
}

/*********************************************************************
*
*       _cbCallback
*/
static void _cbCallback(WM_MESSAGE * pMsg) {
  int i;
  int NCode, Id;
  WM_HWIN hDlg, hItem;
  hDlg = pMsg->hWin;
  switch (pMsg->MsgId) {
    case WM_PAINT:
      _OnPaint();
      return;
    case WM_INIT_DIALOG:
      for (i = 0; i < 3; i++) {
        hItem = WM_GetDialogItem(hDlg, GUI_ID_SLIDER0 + i);
        SLIDER_SetRange(hItem, 0, 255);
        SLIDER_SetValue(hItem, _aColorSep[i]);
        /* Init EDIT-widgets */
        hItem = WM_GetDialogItem(hDlg, GUI_ID_EDIT0 + i);
        EDIT_SetDecMode(hItem, _aColorSep[i],   0, 255, 0, 0);
      }
      break;
    case WM_KEY:
      switch (((WM_KEY_INFO*)(pMsg->Data.p))->Key) {
        case GUI_KEY_ESCAPE:
          ;
          break;
        case GUI_KEY_ENTER:
          GUI_EndDialog(hDlg, 0);
          break;
      }
      break;
    case WM_NOTIFY_PARENT:
      Id    = WM_GetId(pMsg->hWinSrc);      /* Id of widget */
      NCode = pMsg->Data.v;                 /* Notification code */
      switch (NCode) {
        case WM_NOTIFICATION_RELEASED:      /* React only if released */
          if (Id == GUI_ID_OK) {            /* OK Button */
            GUI_EndDialog(hDlg, 0);
          }
          if (Id == GUI_ID_CANCEL) {        /* Cancel Button */
            GUI_EndDialog(hDlg, 1);
          }
          break;
        case WM_NOTIFICATION_VALUE_CHANGED: /* Value has changed */
          _OnValueChanged(hDlg, Id);
          break;
      }
      break;
    default:
      WM_DefaultProc(pMsg);
  }
}


/*********************************************************************
*
*       MainTask
*
*       Demonstrates a dialog box
*
**********************************************************************
*/

void MainTask(void) {
  GUI_Init();
  GUI_CURSOR_Show();
  WM_SetCallback(WM_HBKWIN, _cbBkWindow);  
  WM_SetCreateFlags(WM_CF_MEMDEV);  /* Use memory devices on all windows to avoid flicker */
  while (1) {
    GUI_ExecDialogBox(_aDialogCreate, GUI_COUNTOF(_aDialogCreate), &_cbCallback, 0, 0, 0);
    GUI_Delay(1000);
  }
}